I have this http://www.amazon.com/BUFFALO-MiniStation-Stealth-Portable-Drive/dp/B0046RE21G Buffalo ministation 500 GB USB drive. I formatted it on a Linux machine as Fat32 and loaded it up with mp3 files. My MS recognizes the drive some of the time. When I fire up the car and the drive works it takes several minutes to scan the entire drive to catalog the music. Most often though, the drive is not recognized. The power light on the drive does not come on. Pulling and reinserting the USB cable does nothing.. The car is not set to sleep when I leave the car. Has anyone else seen this or have a clue why it might be happening? Thanks.